Lawnmower maintenance question.?

I am going to sharpen my lawnmower blade, so I need to tip my lawnmower on its side to remove the blade. I don't want to flood the engine with gas or oil, but I also don't want to drain it before removing the blade. Is it safe to tip the lawnmower on its side while it is full of fuel and oil? Which way should I tip it? Thanks.